package com.sky.handler;

import com.sky.constant.MessageConstant;
import com.sky.exception.BaseException;
import com.sky.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.io.IOException;
import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex){
        log.error("异常信息：{}", ex.getMessage());
        return Result.error(ex.getMessage());
    }

    /*
    *  处理插入数据出现唯一约束冲突的sql异常处理器
    *
    * */
    @ExceptionHandler
    public Result SQLIntegrityConstraintViolationExceptionHandler(SQLIntegrityConstraintViolationException ex){
        log.error("sql异常信息：{}" ,ex.getMessage());

        //  Duplicate entry 'zhangsan' for key 'employee.idx_username'
        if (ex.getMessage().contains("Duplicate entry")){
            String[] split = ex.getMessage().split(" ");
            String item = split[2];
            Result result = Result.error(item+ "已存在");
            return result;
        }

        return Result.error(MessageConstant.UNKNOWN_ERROR);

    }

    // 处理文件上传 IO异常的handler
    public Result IOExceptionHandler(IOException ex){
        log.error("文件上传Io异常信息：{}",ex.getMessage());

        return Result.error(MessageConstant.UPLOAD_FAILED);
    }

}
